I have 1 way of doing it. For instance, on level 1, I wait for the nearest Kacheek to climb down the ladder, in which I kill it or wait for it to fall down on the side then I'll kill it. After that, I will go up the ladder really fast and kill the Kacheek. The key to winning this game is to really know what your doing and to have a certain playing style. One level may be hard to someone else, while its the easiest one for you. There's only about 3 levels in the entire game that are hard for me. I forget what level they are, but all I can remember is that one of them, there is 3 Shoyrus on the very top in it's each section and the little blue faerie is on this level. The other one is where there's a wolf on top, (in which he'll eventually climb down), a JubJub on each side, and a wolf on this little spot right next to the ladder. The last one is where there is 3 Shoyrus I believe on top and you have to climb a ladder and kill them all, without them hitting you. The JubJubs climb up 2 different ladders and are on the top as well. 
Then you have to climb down these other ladders on each side to kill 2 Shoyrus. Anyway, the real big tip I can only give you is to just have a certain style that you play by every time and to know what your doing. It worked for me, it CAN work for you :)